And Uber, Waze, Google Chrome and YouTube filled out the rest of the top 10.

"It’s estimated that over 5 billion people in the world now own a mobile phone, it’s our main form of communication and for some people even a method of payment," explained Ernest Doku, a mobile expert at Uswitch.

"It can cause issues when you’re caught out with a drained battery.

"There are a few simple ways to preserve your mobile phone’s battery life, such as turning off WiFi/Bluetooth and making the most of low power modes.

"If all else fails, remember to put a portable charger in your bag on long journeys."

Uswitch also tested popular apps to see how long you could use them before draining a battery completely

Viral app TikTok fared worst, draining the battery of several phones in just 7 hours and 48 minutes on average.

But it beat apps like Twitter, WhatsApp, Bumble, Instagram and Tinder.

Of that lot, Bumble came top with a battery-drain time of 11 hours and 52 minutes.

That's better than rival dating app Tinder (10 hours 53 minutes).

3

Of course, you should take these results with a pinch of salt.

For a start, different phones fare better than others.

iPhone tricks to try today

Here are some of the best...

Typing cursor – When typing, hold down the space bar to turn your keyboard into a trackpad, letting you move around words and sentences more easily

Close all Safari tabs – To do this in one go, simply hold the overlapped squares in the bottom right-hand corner, and press close all tabs

Delete lots of photos quickly – Hold down on a photo and then drag your finger diagonally in Photos to select lots of images at once, then hit delete

Convert currency quickly – Swipe down from the top of your Home screen (or swipe left to right on an iPhone X), then tap in the bar and type a currency (like $200) and it will automatically covert to your local currency

Check if you're due a battery upgrade – Batteries inside smartphones degrade over time. Just go to Settings > Battery > Battery Health, and check out the Maximum Capacity reading. Generally a battery is considered worn when you're down to 80% capacity. If you're below, you can buy a battery swap from Apple

Move apps around faster – Hold an app until it starts wiggling, then (while still holding) tap other apps, causing them to stack so you can move them around easier

If you've got a brand new iPhone 11, it'll likely last longer than an ailing iPhone 6.

Phone batteries degrade over time too, so a phone used for two or more years will probably have less than 80% of its original battery capacity.

You might not have the same background permissions accepted as the apps on Uswitch's list.

And the way you use apps might be completely different, so your own mileage may vary.

For some real Apple juice help, check out our guide to the best iPhone battery life tricks.

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